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Top Forums UNIX for Dummies Questions & Answers onChange + javascript in perl CGI - question Post 302218826 by matrixmadhan on Sunday 27th of July 2008 07:04:57 AM
Old 07-27-2008
onChange + javascript in perl CGI - question

Hello all,

Am trying to include a onChange java script to my perl CGI application which uses POST method to upload files to file_server

This is how I embedded javascript in the perl code that renders CGI application

Code:
print qq|
  <script type="text/javascript" src="display.js">
  </script>
  |;

Contents of display javascript are :

Code:
function changeDispatch(newLink) {
  if ( newLink != null ) {
    document.location.href = newLink;
  }
}

This is the popup menu, when an item is selected from the list it should automatically trigger the action designation instead of a separate "GO" ( submit ) button for each of the popup menu that I have got.

Code:
print $cgi->popup_menu(-name=>'fruits',
                         -values=>$fruits_arr,
                         -onChange=>"changeDispatch('$arg')");

Here in '$arg' if am able to store the selected value from the popup_menu, then its quite easy to formulate a string and pass it to changedDispatch in javascript.
But am not able to retrieve any such data

Whats happening :
If I click on any of the fruits say, "apple" the onClick effect is happening and it comes to the same initial page. If that is, fruits.cgi once I click that - it again comes to fruits.cgi as though it has been loaded for the first time

What I want to happen :
Based on the onClick event, I have other functions to be dispatched via GUI. That would seem to happen only when I know what option is clicked.

I accept that am not that good when it comes to GUI design or adding effects to that.

I have seen several website doing this, it should be something very easy for those who had already worked on this.
Could you please provide some pointers ?

thanks Smilie

Last edited by matrixmadhan; 07-27-2008 at 09:09 AM.. Reason: added more relevant information
 

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Plack::Handler::CGI(3pm)				User Contributed Perl Documentation				  Plack::Handler::CGI(3pm)

NAME
Plack::Handler::CGI - CGI handler for Plack SYNOPSIS
Want to run PSGI application as a CGI script? Rename .psgi to .cgi and change the shebang line like: #!/usr/bin/env plackup # rest of the file can be the same as other .psgi file You can alternatively create a .cgi file that contains something like: #!/usr/bin/perl use Plack::Loader; my $app = Plack::Util::load_psgi("/path/to/app.psgi"); Plack::Loader->auto->run($app); This will auto-recognize the CGI environment variable to load this class. If you really want to explicitly load the CGI handler, you can. For instance you might do this when you want to embed a PSGI application server built into CGI-compatible perl-based web server: use Plack::Handler::CGI; Plack::Handler::CGI->new->run($app); DESCRIPTION
This is a handler module to run any PSGI application as a CGI script. UTILITY METHODS
setup_env() my $env = Plack::Handler::CGI->setup_env(); my $env = Plack::Handler::CGI->setup_env(\%override_env); Sets up the PSGI environment hash for a CGI request from %ENV> and returns it. You can can provide a hashref of key/value pairs to override the defaults if you would like. SEE ALSO
Plack perl v5.14.2 2011-06-22 Plack::Handler::CGI(3pm)
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